sitting beside michelle obama will be the parents of hadiya pendleton, the young woman from the obama's neighborhood in chicago, shot and killed a week after she performed at the president's inauguration in washington. the honor comes as chicago police announce the arrest of pendleton's alleged shooters. they are 18-year-old michael ward, on the left, and 20-year-old kenneth williams. pendleton's cousin spoke by phone to anderson cooper last night. >> on behalf of my family, we are elated to know that there is one person or two now off the streets that could very well cause harm to my neighbor, another relative, or anyone in the world. we're excited to know that the police, the chicago police department worked diligently. however, there is no level of comfort. not long-term comfort. you know, we are still miserable. miserable would only be the term to really acknowledge the feelings of the parents and the family. >> chicago police say the men fired at pendleton by mistake as they were going after rival gang members instead. all right that's a fifth-floor problem... ok. not in my house!